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R/C Manual
3. 1788A-R HADRWARE REMOTE
3.2.6 Test Tone Buttons
These buttons serve the same purpose as those on a 1788A. You can put up a -20dB or
0dB tone on any channel of the unit that is selected.
Putting Up a Test Tone
While holding down either the -20dB or 0dB Tone button, press any Channel Select
button. The chosen tone level will be sent from that channel’s audio outputs (analog and
digital). You can’t group-select tones, but you can sequentially press Channel Selects to
run up more channels while holding down the Tone button.
To defeat the tone, press either Tone button again. The tone(s) will instantly (but
clicklessly) revert back to the mic inputs.
Secondary Functions
The Tone buttons also serve to provide secondary (hidden) functions like display brightness
control, display of the firmware version, and Clip/Limit light holdover time. Table 3-3
shows the secondary functions.
Table 3-3. Secondary Functions of Tone Buttons
Press Function Range
Both Tone Buttons Plus
Ch 4 Clone 1788A-R’s n/a
Ch 5 Set MIDI Channel 1 to 16
Ch 6 Clp/Limit LED Holdover Time 5 Levels (CL01 to CL05)
Ch 7 Display Brightness 5 Levels (d_01 to d_05)
Ch 8 Firmware Version Current Value
Figure 3-2. 1788A-R Front Panel at a Glance
1 2 3 4 5
6 7 8
1. Clip/Limit LED’s: Show when any channel of the 1788A
is clipping or limiting. Serves as an alarm when possible gain
correction is needed.
2. Unit Select Buttons: Allow instant selection of one of 16
preamps in the bank for display and control.
3. Status LED’s: Indicate with 3 colors the condition of
communications with 1788A’s.
4. Comm LED’s: Indicate data passing between 1788A-R and
1788A.
5. Comm Test: Re-teaches the 1788A-R what 1788A’s in
networked in the present bank. Tests communications.
6. Control/Display Panel: Duplicates a 1788A’s set of channel
controls.
7.Preset Manager Panel: Stores and recalls 60 snapshots of
all preamps present in the bank.
8. Test Tone Panel: Duplicates the same buttons on the selected
1788A. Provides similar primary and secondary functions.